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Wrong Motion Values in a Transient Rotor Stator Simulation

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Old   November 5, 2014, 07:35
Default Wrong Motion Values in a Transient Rotor Stator Simulation
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Bin Cui
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Hello,

currently i am working on my bachelor thesis about a simulation of a Rotating Machine. The Simulation is Transient Rotor Stator and at first i wanted to simulate the Motion of the chambers, in which the fluid will stream. I have made a Function of the Movement so one chamber will expand (left one) while the other one will compress(right one). After solving the Setup, my chambers were wrongly displaced by an unknown angle in the first timestep. In my attachments u can see a picture of Timestep 0, where the simulation should start. But in Timestep 1, the Chambers were displaced to the left. Does anyone may know how i can displace the first timestep to the right position so the movement will begin from timestep 0 to timestep 1 with a correct displacement?

The Function with Expressions and Boundary Details are in my attachment aswell. If u need the Setup file i can upload it aswell

Thanks alot
Attached Images
File Type: jpg Step 0.JPG (18.2 KB, 12 views)
File Type: jpg Step 1.JPG (18.4 KB, 11 views)
File Type: jpg Expressions.JPG (32.0 KB, 10 views)
File Type: jpg Boundary Theta Component.JPG (46.7 KB, 7 views)
File Type: jpg Function.jpg (27.8 KB, 6 views)
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cfx pre, movement, movemesh, timesteps, transient rotor stator

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